TS808: RC4558 or JRC4558
grooveyard21
Wich chip sounds better?
catalinbread
there is a difference between the two... The "J" prefix only means
Japan if I am not mistaken. That is the only difference.
Try to use a socket so you can swap out IC's.
catalinbread
Personally, my 808 mod screamer has been on the shelf in favor for a
couple cascaded AMZ boosters.
Groove...@hdn.tmfweb.nl (grooveyard21) wrote in message news:<cc31bfc.01072...@posting.google.com>...
Analog Mike
> What chip did the original TS808 use, the RC4558 or the JRC4558?
Which chip sounds better?<
See my tube screamer page for that answer and much much more.
Regards, mike ~^v^~ aNaLoG.MaN ~^v^~
Mike "at" analogman dot com http://www.analogman.com
Check out my effects Forum: http://www.delphi.com/guitareffects
Daniel R. Haney
> What chip did the original TS808 use, the RC4558 or the JRC4558?
>
> Wich chip sounds better?
The LM833, 4559, or OPA2604...but only if you bring the
rest of the circuit up to snuff.
-drh
--
Steve Daniels
Http://home.netcom.com/~smallbearelec
I have the JRC4558D by Japan Radio Corp. as well as the Texas Instruments RC4558.
Regards
Steve Daniels
Small Bear Electronics
Groove...@hdn.tmfweb.nl (grooveyard21) wrote in message news:<cc31bfc.01072...@posting.google.com>...
Jim Anable
> If you'd like to try both for not much $$, please pay a visit:
>
> Http://home.netcom.com/~smallbearelec
>
> I have the JRC4558D by Japan Radio Corp. as well as the Texas Instruments RC4558.
Steve, what's your opinion on the differences between the two? Did Motorola make a 4558? I thought my Chandler had
Mot 4558's in it, and I often wondered if it would be worth the hassle of swapping to JRC's. My instinct tells me it
would not, because of the PCB mounted controls (Lots of jacks, pots -- this is rackmount).
Kate Ebneter
>
> What chip did the original TS808 use, the RC4558 or the JRC4558?
Both. But primarily the JRC4558D, made by NJR. The RC4558 was made in
Malaysia by TI.
> Wich chip sounds better?
Neither. They sound very similar; there are some slight differences
in tone that you may find significant. Many people have a slight
preference for the RC4558 -- although as Daniel Haney points out
elsewhere in this thread, many others find better op-amps that do
better in modified versions of the circuit.
Kate Ebneter
Collector of Noise Toys
Scotty
Scotty
http://www.proanalog.com Your source for used and vintage effects!
Kate Ebneter <ebn...@ix.netcom.com> wrote in message
news:3B6633FC...@ix.netcom.com...
I've been doing comparisons lately since I have NOS RC's from years ago to
the JRC chip. I do prefer the Malaysian chip for some reason over the
NJR... Both sound excellent, and Stanley is right on the others. In the
next few weeks I plan to experiment a little more with each including some
other 8 pin variants that I bought from an old tech that had walls of stuff
and NOS tubes. I stripped a board and used CC resisters and changed the out
put buffer, IE as AM.
The JRC seemed to have a tad bit more highend bite to it with more gain, but
the RC had more of a rounded tone to it with a smooter to muddy lows... IMHO
as always since we are all different players and hear qualities adherent to
our own spectrum!
grooveyard21
I tested a RC4558N from probably mid 80's, is there much didderence
with an RC4558P? When I Compared the RC4558N to an OLD JRC4558D I
found out that the RC4558N sounded a little darker, a tiny more bass i
have not decided wich one I liked more, since the RC4558N is not an
original part of the TS808 I will go for the JRC4558D, but maybe I
change my mind. :-)
Scotty
grooveyard21 <Groove...@hdn.tmfweb.nl> wrote in message
news:cc31bfc.01080...@posting.google.com...
I've never tried the N, just the P, couldn't tell you...
When I Compared the RC4558N to an OLD JRC4558D I
> found out that the RC4558N sounded a little darker, a tiny more bass i
> have not decided wich one I liked more, since the RC4558N is not an
> original part of the TS808 I will go for the JRC4558D, but maybe I
> change my mind. :-)
The P had more bass and a little less grainyness to it than the JRC. and
less gain... It wasn't darker thanthe JRC IMHO... I modded the pedal for
Monte Merciless who posts here on this group and he was really impressed
with it. BTW, the RC-4558P's I have are NOS from years ago, so they may
sound better (subjective view point) than the new ones being made... I
dunno.
Scotty
Montie Merciless
and round to me.Thanks again Scotty!!!news:3b6b...@news.netnitco.net...
Steve Daniels
JFET input op-amp. I like it, but you might not. I do know that I sell
a lot of 8-pin IC sockets to people who are obviously modding old TS
pedals to accept one of several chips.
Jim Anable <ana...@qwest.net> wrote in message news:<3B660680...@qwest.net>...
Bob Sweet
DPDT?
--
Bob Sweet
Sweet Sound Electronics, Inc.
Coral Springs, Florida
http://www.sweetsound.com
Steve Daniels
Http://home.netcom.com/~smallbearelec
Bob Sweet <b0bs...@bellsouth.net> wrote in message news:<3B6F7742...@bellsouth.net>...
Eric Bekaert
it may give you a few elements on this
Steve Daniels <smallb...@ix.netcom.com> a écrit dans le message :
cadd4876.01080...@posting.google.com...
kriss....@gmail.com
> What chip did the original TS808 use, the RC4558 or the JRC4558?
>
> Wich chip sounds better?
difference in tone with the others ?
kris